论文标题
在挤压热储层之间延伸的一个和两量非平衡热发动机的热力学
Thermodynamics of one and two-qubit nonequilibrium heat engines running between squeezed thermal reservoirs
论文作者
论文摘要
量子热发动机由于其潜在应用而形成了一个主动研究领域。有几种量子制度独有的现象，其中一些现象使这些发动机比其经典对应物具有优势。在这项工作中，我们专注于研究与挤压热浴的一个有限的奥托发动机的研究，并讨论了它们的重要区别以及使用两Q Qubit Engine的优势。特别是，双Qubit发动机对挤压程度与两个量子位之间的相干性之间的相互作用进行了有趣的研究。我们发现，两量价发动机通常会产生比其一分Qubit的发动机更高的功率。挤压浴缸的有效温度可以计算出一个和两倍的发动机，并且随着挤压参数的增加$ r_h $和$ r_c $，它们倾向于显示指数级的增长。还可以观察到，通过调整挤压参数，可以使机器在发动机或冰箱模式下工作。已经研究了由于问题间分离的变化而引起的其他影响。
Quantum heat engines form an active field of research due to their potential applications. There are several phenomena that are unique to the quantum regime, some of which are known to give these engines an edge over their classical counterparts. In this work, we focus on the study of one and two-qubit finite-time Otto engines interacting with squeezed thermal baths, and discuss their important distinctions as well as the advantage of using the two-qubit engine. In particular, the two-qubit engine offers an interesting study of the interplay between the degree of squeezing and that of the coherence between the two qubits. We find that the two-qubit engine generally yields higher power than its one-qubit counterpart. The effective temperature of the squeezed baths can be calculated both for the one and two-qubit engines, and they tend to show an exponential growth with increase in squeezing parameters $r_h$ and $r_c$. It is also observed that by tuning the squeezing parameters, the machine can be made to work either in the engine or in the refrigerator mode. Additional effects due to the change in the inter-qubit separation have been studied.
